I have a 11 month old border collie I play Frisbee with all day. I've always put his Frisbee up when the game was over, and they use to last us months. However, now I'm lucky if they last 4 days. What happened was, one day when little kids where over, they had pulled the Frisbees out. Unaware they even had them, they left one out that my roommates Australian shepherd got to. When I came across them, my border collie was watching him destroy the frisbee. Now even when he catches it, the whole way back hes chewing it up. So my question is, any advice? Maybe some way i could communicate with him, this is inappropriate behavior, or maybe just buy better Frisbees. Right now we use the PetSmart brand, that cost a dollar. So you could imagine how fast they are rendered unable to fly.